I need to know the size of the t-fitting you need to install a mechanical boost gauge. If anyone knows please post and I think I should be able to pick it up at the auto store..correct me if Im wrong about that. Thanks

Unfortunatly the gauge didnt come with a t-fitting it came with an adapter which would go into the manifold where a plug has been usncrewed. However i have no idea where a manifold plug is so i need the size of the T-fitting. Also where is a good place to put the t. Ive heard that near the BOV which is on the IC is the a good place.